says rags, is it? we're a tough call to your team security basically depends to 90 percent from the us out to the hotel commentary dots, april falls on dw, the wireless charging has become a common feature in many cellphones or electric calls. next, it's technically possible to transfer power, not just to cause, but also buses and trucks, even while they're in motion. on this day we'll take a look at how it all works and check out because the state of inductive charging in vehicles that are on the road, is it the future of transport? that story and much more this week on the dw sign saying, welcome to tomorrow or today, the electorate

test car, the charges up while i'm moving down the road as it rolls along the test track, the batteries are top top guide, varnished nearby was even if it's snowing or raining even without any direct contact between the car battery and the road energy can be transferred from one to the other on a smooth university. the really innovative thing is that the charging is roughly as efficient as with wired cyst icebox, misconduct carefulness, which team the team says 92 percent of the energy from the charging system in the road actually reaches the vehicle. an unprecedented efficiency rate is really company, electric gone has demonstrated that the technology works and principle, and the 1st modules are already being installed in some short stretches of road together with the university of ad long and in germany. the firm wants to build a one kilometer long test track on a freeway in that area by 2025. so how does charging while driving actually work in

technical terms? once that is possible, hills installed in the road carry an alternating current which creates an alternating magnetic field. and that field generated by the magnetic coils in the road, transfers energy to a 2nd magnetic coil, and the car generated current through a wireless process known as induction. the system in the road also knows the cars location. that means data can be transfer. so later the system can determine who has tanked electricity and how much important information for billing experts say an e car is range could be increased by 20 percent. if long enough stretches of highway are retrofitted with this technology in the future, but highways aren't the only place street induction has been considered? where might it appear 1st?

does i'm in to do it alternately, be more successful in city traffic where smaller electric vehicles are more likely to be usable or on highways for longer distances. it's the market that will decide side. the idea is not entirely new. an induction, a bus called damian, has been on the road and the german city of orange bike since 2014 the charges at a bus stop. not while driving. a few parking spaces have also been equipped with inductive chargers for charging one on the road has mainly been tried in bosses. one energy provider is testing a 100 meter long section of induction capable road and cause one that has an efficiency of up to 85 percent. the technology will soon also be tested and autonomous cars that could help eliminate unnecessary downtime for charging and increase range. but if enough roads are converted, then normal drivers could also benefit because batteries and commercially available e car is could be less bulky than they are now. might the technology,

perhaps even save electricity in the future? the spot so the base costs will be lighter, so we'll consume less energy but still have the same speed and characteristics of full. so we'll save electricity spot. but since building the new infrastructure will also require energy, it's not yet clear whether or how much electricity the technology might say. but one thing is certain. since inductive charging would lead to smaller batteries, it would reduce the need for lithium and rear arts. but do magnetic coils has to be installed in the streets to the same thing be accomplished with overhead lines tests involving them and the electric trucks are under way. wouldn't they be cheaper to my mind? you might think so. but overhead lines are always problematic because my, when there's freezing rain, for example, or even just during different climatic conditions, then energy transfer is less efficient. and if you'd like to, pardon me, so if it's in the road based magnetic coil technology, by contrast,

works and bad weather, ice and snow. and even though inductive charge, it could also benefit cars. they can't reach overhead lines, only trucks and buses can. incidentally, the magnetic fields on converted roads aren't dangerous for drivers or pedestrians but at around $1000.00 euros per meter building cost. the technology today remains far too expensive for large scale expansion. but that could change by there's a funny example that fit into conduction stove. so the 1st prototypes were extremely expensive. now they're cheap. i think we could push the price down to $300.00 euro for the indian strong gate. if the technology grows cheaper, induction capable of highways in the future for the only slightly more expensive than conventional ones are now, hopefully the 2nd. so i hope that it will be feasible in 10 years or less. as soon as we agree on standardization and regulation goals, i,

it after that things can move quickly. what's still missing are uniform standards that all manufacturers have to stick to. that would ensure that the infrastructure could be used by every one. but 1st, the technology is advantages has to be demonstrated convincing what the problem is read, why are they view of a special science question? send it to us as a video, text or voice mail. if we on switch on the show, we'll send you a little present as a thank you. come on just a task. this week's view question comes from the via e b in zimbabwe. the what causes the mild electronic shock that sometimes occurs when you touch something metal, everything around you and your body as well is made up of tiny adams. these in turn

contain electrically charged particles. they are the positively charged protons and the atoms nucleus. and zipping around that nucleus are the negatively charged electronics. so your body is charged at the electrical charge normally flows back and forth between you and the environment without you noticing a thing the moisture in your skin and in the air helps insure the charge doesn't build up. if it turns cold and dry though, charge exchange no longer works as well. when you then walk, for example, on a synthetic carpet and shoes with rubber soles, your body grows more electrically charged with every stuff. friction causes electrons from the carpet to transferred to your body and accumulate there. because rubber is an insulator. the electronics can't flow back into the carpet. the same thing happens in this 6 there, on the inside this middle ski,

or are rotating rubber band releases electronics, charging this pure electrically and causing the plastic strands to rise in the air . the same happens to the hair on your body when your negatively charged. and when and electrically charged object comes close to a conductive material or a body with an opposing charge. it discharges suddenly, up to 35000 volts, can flow through your body, causing an unpleasant but harmless electric shock. keeping the air from getting too dry and your home or office regularly applying moisturizer to your skin. wearing shoes with leather souls and choosing clothing made of natural fibers like cotton. those are all steps that can help prevent shocks. electricity can be tons to do all kinds of things. like coming this up a mountain to go skiing, and some of the energy that drives cable railways can be recaptured from the brakes

and used for other purposes. one hotel in switzerland has contest it for heating the store spine in switzerland does the steepest particular train route in the world. places the cable railway car climb is a gradient of 110 percent rising up from the municipality of fluids to the winter ski resort. of stores at 1300 meters, because of the steep terrain the train often has to break hard. this generates energy that can be recovered enough energy, in fact, a heat, an entire hotel bill next to the trucks. in technical terms, the process of capturing this power is called regenerative braking engineers, and a call explains the principal. linda trains engine room. yes, because the entire drive train young at 1st when starting off, the train needs energy to pull itself up. the steep slope through the car or is

then past each other in the middle. that's where the tipping point is from then on it's being cold. so this means that the electric motor 1st requires power and then starts producing it halfway up. we use this electricity to heat up the water to me at the effect is a surprisingly big one. for 110000 kilowatt hours of energy is generated by breaking and waste heat yearly. to get the equivalent, you'd have to burn 41000 liters of heating oil a, its energy the hotel can tap the generated electricity, heat water, just like a plugin, tea kettle. there are large water tanks in the basement to store the. the fact that the hotel is located right next to the station is ideal. for t back be due to rain distances mean less heat and all have i would say in terms of construction, that's the thing. so close meant far fewer interventions to set up the connection. yes, the hot water flows to all of the hotels,

$100.00 rooms and it's kitchen. managing director, mazda neu, house is happy to tap the energy from the mountain railroad for heating, especially in an era of high energy prices, made on the, on the deal with this to respond, you can purchase the electricity at a discount on the how? no, no, because kind of the money we pay, it goes straight back to the train. i looked at actually that. okay, so it stays with us here locally with me and we have a small circular economy going. it's a perfect fit for us and who handles the fairies, both as all through the many hotels and restaurants in switzerland are located near similar stations. and they have big energy needs, so there's huge potential for other projects. according to engineer olivia do have a note from the syrians, university of applied sciences. the sustainable idea can easily be modified for other locations of the scary movies, the zipcode. the application itself is not very complicated, but the cable car technology and the building technology,

you have to fit well together. if they do, you can get great projects off the ground and you come on the pl. they pull you the offered license back to the mountain for the 1st guests are being welcome to the newly built stewart lodge. it's cozy and warm a task that commands you can take a longer hot shower here with a clear conscience least quickly like warm showers, heated by the brakes of a nickel or train as it slows down on the world. steepest set of tracks energy from the brakes on a mountain train could theoretically be used to do things like pallet also visual snow. kind of the growing less common in switzerland because another firm has come up with climate fund leased. no licenses which make all traditional snow without using any electricity at all.

at the mex, they've put ski area, snow production is in full swing. the resort use is what are called snow lances for the task. they work entirely without electricity. the head of the company, the manufacturer, is the lowest, donna shows off the revolutionary technologies latest design process. yes, i, it's nice to this is our most recent model which has a 3 head diet. it's all about making as much snow as possible in the shortest possible time that warmer temperatures just a seat belt is proud of the most powerful machine it has line up with, you know, even without itself from when new model is work like they do here and the water really turns to snow. that's great. this snow banking firm operates the kind of open air laboratory and the sky area. it works together closely with the team. it makes the foods and has been testing snowed lance as here for years. they play a key role in creating good piece. in fact, without the lenses, as the head,

snow maker confirms the resort would be hard pressed to survive. only take nutrition in without artificial snow. we wouldn't be able to keep the ski area in operation. we can't rely on nature alone. the since actors played rolls in the decision to use energy efficient snow. lances may i say to those loans. we rely on them as easy. they're cheaper to operate and to maintain. and they're less on site lee and us landscape than a tower with a snow count and on top of it as a rule to produce no most conventional snow cannons and snow. lances need compressed air and generating that and requires energy. but the lance is, can obtain this energy from naturally occurring water pressure. canons can it's been a long road for the company. the 1st reports of a swiss made 0 energy snow. lance 1010 years ago,

a metal monster called messy 0. he tested where else that makes a fort close, done. it was there to use the theme explained that the device makes no without energy. that's a counter intuitive idea and all the and that's because they get all the energy they need to do it from the water spring at high velocity out of the nozzle. so from flap that comes from a lake higher up in the mountains east with and the difference in altitude between here and there. she provides plenty of water pressure in a few to see that will cost us without function a yes. that 1st field test 10 years ago was a milestone. not even if not everything went smoothly. it's very, very simple. this is you know, i mean we have some minor problems with clogged to nozzle due to dirt and water

that wasn't filtered. there are always a little unforeseen thing. sponge. now it's working. is it should and dine delighted eyes to these over. excuse me. yes, we do up there. you can see how the nozzle on the left vaporizes the water that's on the beach. so those water droplets have been blown into the path of a jet of ice particles and they mix together and the water droplets freeze creating tiny balls device. and that's how artificial snow is made on the consciousness. nancy 0, he worked laying the groundwork for future generations that the device you all's detail every august since then we've continued to develop these snow lances that work without energy input. it's we can now produce 3 times as much snow and even in the border line temperature range, they can still produce a lot of snow in a couple of the snow lances are made in the town of him and book up over a 1000 units, leave the automated production facility every year. the company's sales doubled in

20. 22 isn't sales sweet and we're very satisfied. it was a very good year that we always incorporate technical innovation. that helps our company move forward. language thoughts and the threat of energy shortages has given the business with efficient snow lands as a boost. more and more ski resorts are switching from conventional snow canon's. so what does the future hold? a way to ship it's t like are in syria, at least we've achieved the goal of 0 energy in snow production. but there are always new challenges, so it's like a shorter a cold periods and longer warm periods thing was involved in november or december. and you sometimes have to have all the slopes covered in just 3 to 4 days. that's why we rely on multi headed lances for a lot of coverage in a short time. this is just one small section of a gigantic suspended snow making machine. the technology could potentially be used

for more than to just save ski slopes, a plan and visions, it stretched over the disappearing montage glacier to cover the ice with a protective layer of snow and possibly delay its melting by decades. the company is supplying the key components for the project, but isn't the idea of little over the top? it we believe in the project and are sure it's going to happen. the glaciers are melting and once they're gone they won't be able to get them boxed the, let's use our receding and the out of the non pace to, to climate change. the mountain range is moving in faster than in other places. and that has not gone affects. so many animals, including migrate tree bids, some no find it more difficult to cross the outs as they head to will more times in

winter. among them, a species that disappeared from your skies, centuries ago, which experts and now trying to re introduce the node in bold ibis on your mark gets that and there off a flock of northern bald ibis is learning the best route to southern climes position. the 6 it's in the 16th time, i've taken a trip like this, but never won over such a long distance. one, it's a very special moment that comes up is on the moment. it's 7 in the morning at spinning an air field on lake constance. you'll honda splits and his colleagues are making final preparations they've been working towards this day for months. the team wants a guide. young boards on a new migratory route is probably, but involved with the problem is that when left to migrate on their own, let's say northern bald imus is now leave later in the falls because temperatures

remain warmer for longer was and a last year they only set off at the end of october, i have to think about their normal route is over the hours. and later in the year they struggled to fly over the mountains because they don't have the thermal super feet and running the definitely the northern vault. either this could once be found all over europe, then hunters drive the species to the edge of extinction. this project has helped establish several wild colonies of the birds in germany and austria. they usually spend the winter in tuscany. however, as the climate changes showed us there migratory behavior because the elves are becoming such a barrier. this year the flock will head for andalucia in southern spain. the young bird should be able to manage that even later in the year of the birds were born at the end of april ed cause was due. the northern bald ibis cheques soon get used to their foster mother's helena and father on flight training at lake constance begins

in mid. may. the birds quickly learn to follow their to humans, even when they climb into ultra lights and take to the air. again, i didn't want to hear them. this boy generally encourage them all the time, so we call out to them and try to cheer them on a bag so that they stay motivated during the flight. i haven't got them through from the wheels. the young, northern bald ibis has managed a long journey to spain. the 1st stage is a risky one. the birds are flying lower than flocks and previous years. and this far down, danger larks. many high voltage power lines crossed the flight path. this is, this is not so great to fly, so low as a pilot. we really have to take care of. but we also worry about the birds a lot because some of them fly under the lines others through them or over them.

i'm enough to do that. but after a 70 kilometer flight, all 35 birds in the flock, land safe and sound at the 1st planned side there they get a tasty treat for making it this far meal, warned helena and bob, i then wait with their charges until the other team members arrived to set up the aviary. the temporary lodgings for the young, northern bald ibis is, are transported by grounds and has to be assembled and then dismantled. after every stage. it takes a while for the birds to move into it, but the foster mothers are patient. in the end of a veto, at the moment we're just happy to have completed the 1st day. so if everything takes half an hour longer, that's no big deal. you can't stress out too much. you have to give the birds time . that's the most important thing. otherwise they won't come down at all. and after a one day break, the journey continues the flight down to lose. he has almost 2300 kilometers,

nearly 3 times the distance to tuscan. it. will the birds make it and will they be able to find their way back the thing? and if you will get the birds down there, hopefully, and then release them into the wild and see what they do have now they survive. which habitats that you need to find and whether they decide to fly back to germany again, or line next to ball loose fuel be to have fleeting. if the birds do there are plans to settle them here and few, but like on lake constance, it takes 3 years for northern bald ibis is to reach sexual maturity and make their way back to where they came from. as they've been in the, on the when the 1st birds come back from spain in 3 years time, unless they meet another northern baltic. this along the way, it's very likely they'll return to the nearest field where they were trained and where they grew up in the course, and then we can catch them and add value to the colony. here reset the animals and human space constant challenges on their long

journey. at times, strong winds disrupt the flight plan and attacks by birds of prey or regular danger . members of the flock also disappear occasionally. most are found again, but 3 of the birds stayed missing. despite those hurdles, 6 weeks and 19 long stages later, the team reaches the south of spain. yet i know a reason for joy back in germany as an opportunity to catch up on the progress of the project. i'm a former foster mother asks the new ones how they're settling in a report that their spanish counterparts have been very warm and welcoming and find the northern bald ibis is our slowly growing use to their new environment and and to lose yet the spanish partner project on site for a later integrate them into a permanent colony in the area, a zip code that most civic would have. barbara and helena say they're returning to germany, but feel like they're leaving their birds in good hands. they'll return in december

or the release into the wilds and tell them to somebody. for now they can enjoy the satisfaction of a job well done. and hope that one day their boards will day or the long journey fact adjournment. the, do you have a passion for science and health? check out d, w signs the contract talking. why do something does not get drunk? why do gravitational waves squeeze out bodies? how much more say do we need to pay days? do stressed out on screen for help know and what is the perfect cubic foot but by the fine beyond says guess mos on dw science. oh tick, tock channel that wraps things up. so this time around for tomorrow

today the science. so on dw, thanks for joining us and see you again next week the, the, the

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